農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

本試驗針對雙色鰻苗對膏狀飼料營養需求、雙色鰻與日本鰻、短鰭鰻、鱸鰻之 成長比較、粉料與浮性飼料對雙色鰻的飼料效率進行探討，以期建立雙色鰻養殖技 術。結果發現膏狀飼料粗蛋白含量18.04%組之成長較佳，其次是16.80%、14.06%、 19.17%組，純以鰹魚製成粗蛋白含量19.17%組，因較不具誘引性，成長反而較差。 膏狀飼料中添加豬肝、南極蝦、魷魚的效果，以豬肝較佳，其次是魷魚、南極蝦 ，但沒有明顯差。試驗經5個月養殖，結果發現在25.1-27.6℃水溫中，4種鰻魚的攝 餌行為以日本鰻最搶食，每尾平均攝餌量146.8g，其次是雙色鰻、短鰭鰻、鱸鰻 ，分別各為92.2g、91.8g、76.7g。飼料效率以日本鰻的83.5%較佳，其次是雙色鰻 、短鰭鰻分別為80.9%、76.7%，三種無顯著差異，但明顯高於鱸鰻。增重率以日本 鰻最大，高達823%，成長明顯最快，其次是雙色鰻、短鰭鰻分別為403%、385%，兩 者無顯著差異；鱸鰻最低為258%。成長速度以日本鰻最快，明顯高於雙色鰻、短鰭 鰻，而鱸鰻成長速度較差。幼鰻分別投餵市售浮料與粉料，在水泥池經4個月飼育後 ，增重率及飼料效率，均以浮料組的551 %及83 %較高，且明顯高於粉料組的475 %及67 %；但活存率則二組之間沒有明顯差異。

The experiment is expected to build rearing technology ofAnguilla bicolor bicolor,including the nutritious requirement of paste food forA.bicolor bicolor , contrast the growth ofA.bicolor pacifica, A.japonica ,A.bicolor pacificaandA.marmorata , study the feed efficiency difference between powder feed and floating pellet toA.bicolor bicolor . The result expressed that contain crude protein 18.04% is better to grow ,the next 16.80%, 14.06%,19.17% are following it. The bonito-made food contain crude protein 19.17% was less attractive, caused poorer growth. Adding liver,Euphausia superband squid to paste food ,in the case ,liver additive was better to grow ,the next squid andE.superbwere following it. But no obvious difference between them. Through rearing 5 months,under water temperature 25.1~27.6℃,among 4 kind of eels,A.japonicashowed the best intake food behavior , average intake food quantity was 146.8g ,the nextA.bicolor bicolor ,A.bicolor pacificaandA.marmorata , were separately 92.2g, 91.8g and 76.7g. A.japonica showed better feed efficiency 83.5% .the nextA.bicolor bicolorandA.bicolor pacificawere separately 80.9% and 76.7%, the three kind of eels showed no significant difference. But it was apparently higher thanA.marmorata . The top weight gain percent belonged toA.japonica , it is 823%. showed its fastest growth, the nextA.bicolor bicolorandA.bicolor pacificawere separately 403% and 385%. there was no significant difference between them. The lowest weight gain was owned toA.marmorata , it was 258%. The fastest grow rate was gotten byA.japonica, it was higher thanA. bicolor bicolorandA.bicolor pacifica . The lower grow rate was belonged toA.marmorata.A four-month experiment for the growth of juvenile eels using floating pellet and powder feed was conducted. The group fed with floating pellet had significantly higher percent weight gain and feed efficiency (551% and 83%) than powder feed (475% and 67%).